I need to write an essay but have no Idea where to go with it.

Start with the type of essay: https://www.time4writing.com/writing-resources/types-of-essays/

Then, within that type, settle on what you want to say, and why. for example:
https://owlcation.com/humanities/150-English-Essay-Topics
https://www.ereadingworksheets.com/writing/persuasive-essay-topics/
From those ideas, develope at least three ideas of you own.